Add quick and hacky prototype of bbb-build-recording backend
parent
141342ea20
commit
b2eb581803
@ -0,0 +1,104 @@
|
||||
#!/usr/bin/env bash
|
||||
|
||||
# Put it into /usr/lib/cups/backend/bbb-build-recording
|
||||
|
||||
# Authors:
|
||||
# - Mikhail Novosyolov <mikhailnov@dumalogiya.ru>, 2021
|
||||
|
||||
# Based on examples at https://community.kde.org/Printing/Developer_Tools
|
||||
# Docs:
|
||||
# - backend(7) https://www.cups.org/doc/man-backend.html
|
||||
###############################################################################
|
||||
|
||||
set -efu
|
||||
set -o pipefail
|
||||
|
||||
# jobtitle=meeting ID (/var/bigbluebutton/recording/raw/$meeting_id),
|
||||
# we are not interested in all other variables
|
||||
readonly jobtitle=${3}
|
||||
|
||||
BBB_DIR_RAW="${BBB_DIR_RAW:-/var/bigbluebutton/recording/raw}"
|
||||
|
||||
# Exit codes from /usr/include/cups/backend.h
|
||||
CUPS_BACKEND_OK=0 # Job completed successfully
|
||||
CUPS_BACKEND_FAILED=1 # Job failed, use error-policy
|
||||
CUPS_BACKEND_AUTH_REQUIRED=2 # Job failed, authentication required
|
||||
CUPS_BACKEND_HOLD=3 # Job failed, hold job
|
||||
CUPS_BACKEND_STOP=4 # Job failed, stop queue
|
||||
CUPS_BACKEND_CANCEL=5 # Job failed, cancel job
|
||||
CUPS_BACKEND_RETRY=6 # Job failed, retry this job later
|
||||
CUPS_BACKEND_RETRY_CURRENT=7 # Job failed, retry this job immediately
|
||||
|
||||
# We use 'set -e', script may fail somewhere,
|
||||
# make CUPS restart the job later if the error was unexpected
|
||||
_trap_exit(){
|
||||
if [ $? != "$CUPS_BACKEND_OK" ] && [ $? != "$CUPS_BACKEND_FAILED" ]; then
|
||||
exit "$CUPS_BACKEND_RETRY"
|
||||
fi
|
||||
}
|
||||
trap '_trap_exit' EXIT
|
||||
|
||||
input=""
|
||||
|
||||
case ${#} in
|
||||
0 )
|
||||
# This is CUPS listing backends
|
||||
# device-class scheme "Unknown" "device-info"
|
||||
echo direct bbb-build-recording \"Unknown\" \"Build recording of BigBlueButton\"
|
||||
exit
|
||||
;;
|
||||
12 )
|
||||
input=/dev/stdin
|
||||
;;
|
||||
13 )
|
||||
# do not remove {} here!
|
||||
input="${13}"
|
||||
;;
|
||||
* )
|
||||
echo CRIT: unsupported number of arguements! 1>&2
|
||||
exit "$CUPS_BACKEND_FAILED"
|
||||
;;
|
||||
esac
|
||||
|
||||
if [ "$jobtitle" = "(stdin)" ]; then
|
||||
echo CRIT: printing job must be titled! 1>&2
|
||||
exit "$CUPS_BACKEND_FAILED"
|
||||
fi
|
||||
|
||||
if [ -z "$jobtitle" ]; then
|
||||
echo CRIT: empty title of the printing job! 1>&2
|
||||
exit "$CUPS_BACKEND_FAILED"
|
||||
fi
|
||||
|
||||
if ! test -d "$BBB_DIR_RAW"/"$jobtitle" ; then
|
||||
echo CRIT: recording ${jobtitle} does not exist! 1>&2
|
||||
exit "$CUPS_BACKEND_FAILED"
|
||||
fi
|
||||
|
||||
if ! test -f "$BBB_RAW_DIR"/"$jobtitle"/events.xml ; then
|
||||
echo CRIT: recording ${jobtitle} does not have events.xml! 1>&2
|
||||
exit "$CUPS_BACKEND_FAILED"
|
||||
fi
|
||||
|
||||
# TODO: process it by ourself
|
||||
# TODO: watch *.failed and *.done files
|
||||
# TODO: use ionotify
|
||||
c=0
|
||||
while true
|
||||
do
|
||||
# 2 hours
|
||||
if [ $c -gt 240 ]; then
|
||||
echo CRIT: timeout waiting for BBB to process recording ${jobtitle} 1>&2
|
||||
exit "$CUPS_BACKEND_RETRY"
|
||||
fi
|
||||
if test -f /var/bigbluebutton/recording/status/processed/${jobtitle}-presentation.fail; then
|
||||
echo CRIT: BBB failed to process recording ${jobtitle} 1>&2
|
||||
exit "$CUPS_BACKEND_FAILED"
|
||||
fi
|
||||
if test -f /var/bigbluebutton/recording/status/processed/${jobtitle}-presentation.done ; then
|
||||
echo INFO: BBB has processed recording ${jobtitle} 1>&2
|
||||
exit "$CUPS_BACKEND_OK"
|
||||
fi
|
||||
sleep 30s
|
||||
c=$((++c))
|
||||
done
|
Loading…
Reference in New Issue